>Monkbot at 10:46, 17 January 2021

2021-01-17T10:46:39Z

New page

{{Infobox spaceflight |auto=all
| name = GSAT-19
| image = File:Render of GSAT-19 in deployed configuration.png
| image_caption = Render of GSAT-19
| mission_type = [[Communications satellite|Communications]]
| operator = [[Indian National Satellite System|INSAT]]
| COSPAR_ID = 2017-031A
| SATCAT = 42747
| website = [http://isro.gov.in/Spacecraft/gsat-19 GSAT-19]
| mission_duration = Planned: 10 years<ref name="brochure">{{cite web |url=http://www.isro.gov.in/sites/default/files/flipping_book/GSLV%20Mark%20III%20D1/files/assets/common/downloads/GSLV%20Mark%20III%20D1.pdf |title=GSLV Mark III-D1 / GSAT-19 Mission |publisher=Indian Space Research Organisation}}</ref> Elapsed: {{time interval|5 June 2017 11:58|show=ymd|sep=,}}

| spacecraft_bus = [[I-3K]]
| manufacturer = [[Indian Space Research Organisation Satellite Centre|ISRO Satellite Centre]] [[Space Applications Centre]]
| launch_mass = {{convert|3136|kg|lb|abbr=on}}<ref name="brochure" />
| dry_mass = {{convert|1394|kg|lb|abbr=on}}<ref name="brochure" />
| dimensions = {{convert|2.0|xx|1.77|xx|3.1|m|ft|abbr=on}}<ref name="brochure" />
| power = 4,500 watts<ref name="brochure" />

| launch_date = {{start-date|5 June 2017, 11:58}} [[UTC]]<ref name="sfnow20170605">{{cite news |url=https://spaceflightnow.com/2017/06/05/indias-launcher-fleet-gets-an-upgrade-with-successful-test-flight/ |title=India’s launcher fleet gets an upgrade with successful test flight |work=Spaceflight Now |first=Stephen |last=Clark |date=5 June 2017 |access-date=6 June 2017}}</ref>
| launch_rocket = [[GSLV Mark III]]-D1<ref name="TTOI20170519">{{cite news |url=http://timesofindia.indiatimes.com/india/isro-all-set-for-indias-most-powerful-launch-vehicle/articleshow/58754518.cms |title=Come June 5, ISRO to launch 'game changer' rocket |work=The Times of India |agency=Times News Network |first=Prasannal |last=Laxmi Ajai |date=19 May 2017 |access-date=21 May 2017}}</ref>
| launch_site = [[Satish Dhawan Space Centre|Satish Dhawan]] [[Satish Dhawan Space Centre Second Launch Pad|SLP]]
| launch_contractor = [[ISRO]]
| entered_service =

| disposal_type = 
| deactivated = 

| orbit_reference = [[Geocentric orbit|Geocentric]]
| orbit_regime = [[Geostationary orbit|Geostationary]]
| orbit_longitude = 48° E<ref name="GSAT19">{{cite web |url=http://www.sac.gov.in/Vyom/dpp.jsp |title=Delivered Communication and Navigation Payloads |publisher=ISRO/Space Applications Centre |access-date=6 June 2017}}</ref>
| orbit_periapsis = {{convert|35470|km|mi|0|abbr=on}}
| orbit_apoapsis = {{convert|35869|km|mi|0|abbr=on}}
| orbit_inclination = 0.101 deg
| orbit_period = 23 hr, 50 min, 10 sec
| orbit_epoch = 10 June 2017, 02:29 UTC<ref name="orbit-raise-4">{{cite web |url=http://isro.gov.in/update/10-jun-2017/fourth-and-final-orbit-raising-operation-of-gsat-19-satellite-has-been |title=The fourth and final orbit raising operation... |publisher=Indian Space Research Organisation |date=10 June 2017 |access-date=12 June 2017 |archive-url=https://web.archive.org/web/20170613001450/http://www.isro.gov.in/update/10-jun-2017/fourth-and-final-orbit-raising-operation-of-gsat-19-satellite-has-been |archive-date=13 June 2017 |url-status=dead }}</ref>
| apsis = gee

| trans_band = {{plainlist|
* 4 × Ku/Ka [[forward link]]s
* 4 × Ku/Ka [[return link]]s
}}
| trans_frequency = 
| trans_bandwidth = 
| trans_capacity = 
| trans_coverage = India
| trans_TWTA = 
| trans_EIRP = 
| trans_HPBW = 

| programme = [[GSAT]]
| previous_mission = [[GSAT-9]]
| next_mission = [[GSAT-17]]
}}

'''GSAT-19''' is an Indian communications satellite launched by the [[Indian Space Research Organisation]] aboard a [[GSLV Mark III]] on 5 June 2017.<ref name="sfnow20170605" />

==Satellite and payloads==
The satellite will act as a [[testbed]] for the modular I-6K [[satellite bus]], carrying experimental technologies such as [[ion thruster]]s for manoeuvring and stabilisation, active thermal control using [[thermal radiator]]s, a miniaturised [[inertial reference unit]], indigenously produced [[lithium-ion batteries]], and C-band [[traveling wave tube amplifier|traveling-wave-tube amplifiers]].<ref name="ar201415">{{cite web |url=http://www.isro.gov.in/sites/default/files/pdf/AR2014-15.pdf |title=Annual Report: 2014-2015 |publisher=Indian Space Research Organisation |page=26 |date=2015}}</ref><ref name="aamein20150819">{{cite web |url=http://www.aame.in/2015/08/first-prototype-of-isro-semi-cryogenic.html |title=First Prototype of ISRO's Semi-Cryogenic Engine To Be Ready By 2016 |work=AA Me, IN |date=19 August 2015 |access-date=26 October 2016}}</ref><ref name="GSat 19E">{{cite news |url=http://space.skyrocket.de/doc_sdat/gsat-19.htm |title=GSat 19 |work=Gunter's Space Page |access-date=27 May 2016}}</ref>

Rather than traditional transponders, GSAT-19 carries four [[Ku band|Ku]]/[[Ka band|Ka]]-band [[forward link]] beams and four Ku/Ka-band [[return link]] beams, providing much higher data throughput than India's previous communications satellites.<ref name="times20170605">{{cite news |url=http://timesofindia.indiatimes.com/india/isros-gsat-19-11-satellites-a-revolution-in-communications/articleshow/58983052.cms |title=Isro's GSAT-19, GSAT-11 satellites: Game changers in communications |work=The Times of India |agency=Press Trust of India |date=5 June 2017 |access-date=26 June 2017}}</ref><ref name="nasasf20170605">{{cite news |url=https://www.nasaspaceflight.com/2017/06/glsv-mark-iii-rocket-launch-gsat-19-satellite/ |title=GLSV Mark III rocket conducts ‘all-up’ launch with GSAT-19 satellite |work=NASASpaceFlight.com |first=William |last=Graham |date=5 June 2017 |access-date=26 June 2017}}</ref> It additionally carries a Geostationary Radiation Spectrometer (GRASP) payload, which will "monitor and study the nature of charged particles and the influence of space radiation on satellites and their electronic components".<ref name="thewire20170626">{{cite news |url=https://thewire.in/151354/grasp-isro-mk3-radiation-gsat-20/ |title=ISRO’s Mk III Launched a Little-Known Instrument Called GRASP – This Is What It Does |work=The Wire |first=R. |last=Ramachandran |date=26 June 2017 |access-date=26 June 2017}}</ref>

==Orbit raising and station keeping==
The satellite was launched aboard the GSLV Mk III-D1 rocket in the evening of 5 June 2017 to a [[geostationary transfer orbit]] perigee of {{convert|180|km|mi|0|abbr=on}}. This was followed by a series of orbit raising operations (using an on-board [[Liquid Apogee Motor|LAM]] and chemical thrusters<ref name="brochure" />) to place the satellite in the intended geostationary orbital slot.

{| cellpadding="2" style="margin:0 auto; text-align:center;" class="wikitable sortable"
|-
! rowspan="2"| Op #
! rowspan="2"| Date/ Time (UTC)
! rowspan="2"| LAM burn time
! colspan="2"| Height achieved
! rowspan="2"| Inclination achieved
! rowspan="2"| Orbital period
! rowspan="2"| References
|-
! Apogee || Perigee
|-
| 1 || 6 June 2017 08:33 || 116 s || {{convert|35938|km|mi|abbr=on}} || {{convert|172.77|km|mi|abbr=on}} || 21.56° || 10 h, 30 min || <ref>{{cite web |url=http://isro.gov.in/update/08-jun-2017/first-orbit-raising-operation-of-gsat-19-satellite-has-been-successfully-carried |title=The first orbit raising operation... |publisher=Indian Space Research Organisation |date=8 June 2017 |access-date=12 June 2017}}</ref>
|-
| 2 || 7 June 2017 10:14 || 5538 s || {{convert|35840|km|mi|abbr=on}} || {{convert|10287|km|mi|abbr=on}} || 7.02° || 13 h, 58 min || <ref>{{cite web |url=http://isro.gov.in/update/08-jun-2017/second-orbit-raising-operation-of-gsat-19-satellite-has-been-successfully-carried |title=The second orbit raising operation... |publisher=Indian Space Research Organisation |date=8 June 2017 |access-date=12 June 2017}}</ref>
|-
| 3 || 9 June 2017 04:25 || 3469 s || {{convert|35875|km|mi|abbr=on}} || {{convert|30208|km|mi|abbr=on}} || 0.793° || 21 h, 38 min || <ref>{{cite web |url=http://isro.gov.in/update/10-jun-2017/third-orbit-raising-operation-of-gsat-19-satellite-has-been-successfully-carried |title=The third orbit raising operation... |publisher=Indian Space Research Organisation |date=10 June 2017 |access-date=12 June 2017}}</ref>
|-
| 4 || 10 June 2017 02:29 || 488 s || {{convert|35869|km|mi|abbr=on}} || {{convert|35470|km|mi|abbr=on}} || 0.101° || 23 h, 50 min, 10 s || <ref name="orbit-raise-4" />
|-
|}

==References==
{{Reflist}}

{{GSAT Satellites}}
{{Indian spacecraft}}
{{Orbital launches in 2017}}

[[Category:GSAT satellites]]
[[Category:Spacecraft launched by India in 2017]]
[[Category:Spacecraft launched by GSLV rockets]]

GSAT-19 - Revision history

>Monkbot at 10:46, 17 January 2021